mirror of
https://github.com/MariaDB/server.git
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140 lines
4.5 KiB
Text
140 lines
4.5 KiB
Text
CREATE TABLE t1 (
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a varchar(32) character set utf8 collate utf8_bin NOT NULL,
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b varchar(32) character set utf8 collate utf8_bin NOT NULL )
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ENGINE=MyISAM DEFAULT CHARSET=utf8;
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INSERT INTO t1 VALUES
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('AAAAAAAAAA','AAAAAAAAAA'), ('AAAAAAAAAB','AAAAAAAAAB '),
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('AAAAAAAAAB','AAAAAAAAAB'), ('AAAAAAAAAC','AAAAAAAAAC'),
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('AAAAAAAAAD','AAAAAAAAAD'), ('AAAAAAAAAE','AAAAAAAAAE'),
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('AAAAAAAAAF','AAAAAAAAAF'), ('AAAAAAAAAG','AAAAAAAAAG'),
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('AAAAAAAAAH','AAAAAAAAAH'), ('AAAAAAAAAI','AAAAAAAAAI'),
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('AAAAAAAAAJ','AAAAAAAAAJ'), ('AAAAAAAAAK','AAAAAAAAAK');
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set tmp_table_size=1024;
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SET @saved_dbug = @@SESSION.debug_dbug;
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set session debug_dbug="+d,raise_error";
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SELECT MAX(a) FROM t1 GROUP BY a,b;
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ERROR 23000: Can't write; duplicate key in table '(temporary)'
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set tmp_table_size=default;
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DROP TABLE t1;
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#
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# Bug #50946: fast index creation still seems to copy the table
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#
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CREATE TABLE t1 (a INT(100) NOT NULL);
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INSERT INTO t1 VALUES (1), (0), (2);
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SET SESSION debug_dbug='+d,alter_table_only_index_change';
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ALTER TABLE t1 ADD INDEX a(a);
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SET debug_dbug= @saved_dbug;
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(100) NOT NULL,
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KEY `a` (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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SELECT * FROM t1;
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a
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0
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1
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2
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DROP TABLE t1;
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#
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# Bug#42064: low memory crash when importing hex strings, in Item_hex_string::Item_hex_string
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#
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CREATE TABLE t1(a BLOB);
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SET SESSION debug_dbug="+d,bug42064_simulate_oom";
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INSERT INTO t1 VALUES("");
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Got one of the listed errors
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SET debug_dbug= @saved_dbug;
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DROP TABLE t1;
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#
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# Bug#41660: Sort-index_merge for non-first join table may require
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# O(#scans) memory
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#
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CREATE TABLE t1 (a INT);
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INSERT INTO t1 VALUES (0), (1), (2), (3), (4), (5), (6), (7), (8), (9);
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CREATE TABLE t2 (a INT, b INT, filler CHAR(100), KEY(a), KEY(b));
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INSERT INTO t2 SELECT 1000, 1000, 'filler' FROM t1 A, t1 B, t1 C;
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INSERT INTO t2 VALUES (1, 1, 'data');
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# the example query uses LEFT JOIN only for the sake of being able to
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# demonstrate the issue with a very small dataset. (left outer join
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# disables the use of join buffering, so we get the second table
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# re-scanned for every record in the outer table. if we used inner join,
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# we would need to have thousands of records and/or more columns in both
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# tables so that the join buffer is filled and re-scans are triggered).
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SET @save_optimizer_switch=@@optimizer_switch;
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SET optimizer_switch='outer_join_with_cache=off';
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SET SESSION debug_dbug= '+d,only_one_Unique_may_be_created';
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EXPLAIN
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SELECT * FROM t1 LEFT JOIN t2 ON ( t2.a < 10 OR t2.b < 10 );
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id select_type table type possible_keys key key_len ref rows Extra
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x x x x x x x x x
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x x x x x x x x x Using sort_union(a,b); Using where
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SELECT * FROM t1 LEFT JOIN t2 ON ( t2.a < 10 OR t2.b < 10 );
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a a b filler
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0 1 1 data
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1 1 1 data
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2 1 1 data
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3 1 1 data
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4 1 1 data
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5 1 1 data
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6 1 1 data
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7 1 1 data
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8 1 1 data
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9 1 1 data
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SET debug_dbug= @saved_dbug;
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SET optimizer_switch=@save_optimizer_switch;
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DROP TABLE t1, t2;
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#
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# Bug#11747970 34660: CRASH WHEN FEDERATED TABLE LOSES CONNECTION DURING INSERT ... SELECT
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#
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CREATE TABLE t1(f1 INT, KEY(f1));
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CREATE TABLE t2(f1 INT);
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INSERT INTO t1 VALUES (1),(2);
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INSERT INTO t2 VALUES (1),(2);
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SET SESSION debug_dbug="+d,bug11747970_raise_error";
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INSERT IGNORE INTO t2 SELECT f1 FROM t1 a WHERE NOT EXISTS (SELECT 1 FROM t2 b WHERE a.f1 = b.f1);
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ERROR 70100: Query execution was interrupted
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SET debug_dbug= @saved_dbug;
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DROP TABLE t1,t2;
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#
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# End of 5.1 tests
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#
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#
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# BUG#11747548:DETECT ORPHAN TEMP-POOL FILES, AND HANDLE GRACEFULLY.
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#
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#Set up.
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CREATE TABLE pid_table(pid_no INT);
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CREATE TABLE t1 (a BLOB);
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INSERT INTO t1 VALUES (1), (2);
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#Create MYD and MYI files for intrinsic temp table.
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LOAD DATA LOCAL INFILE 'pid_file' INTO TABLE pid_table;
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#Reports an error since the temp file already exists.
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SELECT a FROM t1 ORDER BY rand(1);
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a
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1
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2
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#With patch, the query executes successfully.
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SELECT a FROM t1 ORDER BY rand(1);
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a
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1
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2
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#cleanup
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DROP TABLE t1, pid_table;
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#
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# MDEV-12416 OOM in create_virtual_tmp_table() makes the server crash
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#
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CREATE FUNCTION f1(a INT) RETURNS INT RETURN a;
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SET SESSION debug_dbug="+d,simulate_create_virtual_tmp_table_out_of_memory";
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SELECT f1(1);
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Got one of the listed errors
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DROP FUNCTION f1;
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SET debug_dbug= @saved_dbug;
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#
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# MDEV-27978 wrong option name in error when exceeding max_session_mem_used
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#
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SET SESSION max_session_mem_used = 8192;
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SELECT * FROM information_schema.processlist;
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ERROR HY000: The MariaDB server is running with the --max-session-mem-used=8192 option so it cannot execute this statement
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SET SESSION max_session_mem_used = DEFAULT;
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#
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# End of 10.2 tests
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#
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